S-90323A325 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel and passivated finish for long-lasting performance in harsh environments.
• High-strength durability offering 80,000 psi tensile strength and Rockwell B95 hardness to withstand heavy loads and prevent stripping.
• Precise alignment and reduced wear due to the precisely fitted shoulder with a 10mm length and tight diameter tolerance for stable component positioning.
• Reliable thread engagement with Class 6g thread fit and coarse M4 x 0.7mm pitch, ensuring secure fastening and easy installation.
• Low-profile, space-saving design featuring a smooth low socket head and 2.5mm hex drive for efficient tool access in confined areas.
• Compliance with environmental standards including RoHS 3 and REACH, making it safe for various industrial applications without hazardous substances.
• Right-hand thread direction for standard assembly processes, enhancing usability and reducing installation errors.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in precision assemblies, such as misalignment and component wear. Made from 18-8 stainless steel with a passivated finish, it resists corrosion in demanding settings like machinery, automotive, and electronics. The precise shoulder fit with a 10mm length and tight tolerances ensures accurate alignment of parts, reducing vibration and extending equipment life. Its coarse thread and Class 6g thread fit provide robust holding power, while the low socket head and 2.5mm hex drive allow for easy installation in compact spaces. Ideal for applications requiring high tensile strength and reliability, this screw supports efficient B2B procurement by meeting strict industry standards.

Specification Summary & Compliance

This shoulder screw adheres to metric dimensions with an M4 x 0.7mm coarse thread and Class 6g thread fit for precise tolerance. The shoulder features a diameter of 5 mm with a tolerance of -0.025 to 0 mm and a length of 10 mm with a tolerance of 0 to 0.05 mm, ensuring accurate assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without restricted substances.